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2023 R1S Not Charging - Persistent 'Charging Fault' Error

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Mike T. · rep 0 · May 25, 5:03 AM · 1 replies · solved · Question

Vehicle: 2023 Rivian R1S Adventure Package

I'm having a frustrating issue with my 2023 Rivian R1S Adventure Package. For the past two days, it refuses to charge reliably. Whether I plug it into my Rivian Wall Charger at home or a public Level 2 charger, it initiates charging for about 30-60 seconds, then abruptly stops and displays a 'Charging Fault' error on the screen.

The charging port light also turns red when the fault occurs. I've tried using different charging cables, different outlets, and even tried a different public charger, but the problem persists. Is this a known issue with the R1S? What could be causing this, and is there anything I can check before scheduling a service appointment?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 5:03 AM

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ClearTheCode admin answer:

  1. Understanding 'Charging Fault': A 'Charging Fault' indicates that the vehicle's onboard charging system or battery management system (BMS) has detected an anomaly preventing safe or effective charging. This could be anything from a communication error to a hardware failure.

  2. Common Causes for Charging Faults:

    • Onboard Charger (OBC) Failure: The vehicle's internal component responsible for converting AC to DC for the battery could be faulty.
    • Charging Port Issue: Damage or debris in the charging port, or a faulty proximity/control pilot pin, can prevent proper communication with the charger.
    • Battery Management System (BMS) Fault: The BMS monitors battery health, temperature, and voltage. A fault here could halt charging to protect the battery.
    • High-Voltage Contactor/Relay Issue: Relays that connect the battery to the charging system can fail.
    • Ground Fault/Electrical Supply Issue: Less likely if it happens on multiple chargers, but a ground fault in your home wiring or the charger itself could trigger this.
    • Software Glitch: A rare but possible cause, where a software bug incorrectly flags a fault.
    • DTCs: Look for codes like P0Dxx (Charging System), P0Axx (High Voltage System), or Bxxxx (Body/Communication) if you have an advanced EV-compatible scan tool.

  3. Troubleshooting Steps (Limited DIY):

    • Inspect Charging Port: Carefully check the vehicle's charging port for any visible debris, bent pins, or corrosion. Ensure the charging cable is fully seated.
    • Check Charger Status: Observe the status lights on your Rivian Wall Charger or the public charger. They might indicate a specific error code or status before the vehicle's fault.
    • Full Vehicle Reboot: Sometimes a complete reboot of the vehicle's infotainment system and control modules can clear transient errors. Consult your owner's manual for the proper reboot procedure.

  4. When to See a Shop:

    • Persistent Issue: Since you've tried multiple chargers and cables, this points to an issue within the vehicle itself.
    • Contact Rivian Service: Charging system faults are complex and involve high-voltage components. This is not a DIY repair. You should contact Rivian service immediately. They have the specialized diagnostic equipment to identify the precise component causing the fault and perform the necessary repairs, which could range from a software update to a component replacement (e.g., OBC, charging port, or even a BMS module).
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